java JSON转换

`

// 将对象转换成json字符串
public static String objectToJson(Object data) {
      ObjectMapper mapper = new ObjectMapper();
      try {
	      String string = mapper.writeValueAsString(data);
	      return string;
      } catch (JsonProcessingException e) {
	      e.printStackTrace();
      }
      return null;
}

  //将json结果集转化为对象
  public static <T> T jsonToPojo(String jsonData, Class<T> beanType) {
      ObjectMapper mapper = new ObjectMapper();
      try {
          T t = mapper.readValue(jsonData, beanType);
          return t;
      } catch (Exception e) {
	      e.printStackTrace();
      }
      return null;
  }

`